Method of filling tanks with compressed gas



Aug. 9, 1932. Q -r METHOD OF FILLING TANKS WITH COMPRESSED GAS FiledJuly 14, 1928 area. With conditions, high Patented Au 9, 1932' um'ransrArEs PATENFEJOFFICE cnn's'raa norm, or mmvnn, conoaano, assicnoa, BYmnsnn *asslemms, 'ro omen cmma .um canon ronx RESEARCH LABORATORIES, INCA. CORPORATION OF NEW xn'rnon or name couranssnn eas Application fled m14,1928. Serial no. 292,817.

This invention relates to a method of and apparatus for fillingtanks-pith a compressed gas from other containers m wh1ch the gaseoussubstance is held as a liquid. 7

. One of the objects of the invention is to render possible thewider-economic distribution of gaseous oxygen. Under present freightrates on the comten make it impossible ecopressed gas 0 nomically totion, liquid oxygen in containers-can be shipped to distri ution points-for gas cylinders and the latter can be shipped from there.

Another object of the invention is to make it possible to bring a filledgas cylinder to a suficiently high pressure so that a relatively largeuantity of gasecanbe forced into the cylin er. g

- The accompanying dra shows an assemblage of ap aratus where y myobjects may be attaine The viewis a side elevation, partly in section.

A s storage means in v cylin r 10, shown on the left, is filled with acompressed gas, which may be oxygen: None of the gas inthis cylinder isin liquid form. 11 is the usual escape valve on cylinders of this typeand 12 is a reducing valve .of the ordinary kind. The metal pipe 13leads into a container of liquid oxygen 14 and terminates at the nozzleof a jet pump the bottom of the container as possi v This injector,shown diagrammatically, is

in the form of an injector 15 below the level of the liquid oxygen andpreferably as near ble.

not difierent in principle or construction from the usual injector forsteam boilers, except that it is of small enough size to go through theneck of the liquid oxygen c'ontainer.

A second pipe 17 leads from the injector to a receiver in the form of acylinder 18. which is to be filled. This pipe is of somedistribute thegas over a wide the aid of the "present inven-' the form of a whatlarger diameter than that of. 13, since it must carry a large volume ofgas. No special valves are necessary on either the pipe 17 or thecylinder 18, but the ordinary valve 19 of that cylinder must be of acapacity, equal to or greater than pipe 17. (In cold climates, means forheating'any or all of the'containers may be provided.

'Inoperation, the above apparatus -functions as follows: C linder 10contains gas at a high pressure w lecylinderlS-may contam gas atsomewhat lower pressure or be.

entirely empty. Valves 11, 12, and 19 are opened and the pressure at thereducing valve 12 regulated in accordance with the speed at. whichit. isdesired to fill cylinder 18. The

stream of gas flowing through pipe-13 has, at the injector, a combinedvapc .zingand entraining action. That is to say, globules of liquidoxygen are sucked into the injector and are partially vaporized init,the pipe 17 andcylinder 18. The result is that the cylinder 18 iseventually filled with a bottom layer of-diquid oxygen with alayerof'gas above it, the gas being at a relatively low pressure.

, Since it is the object of the invention to fill cylinders with gas,some means to vaporize the liquid-oxygen is generally necessary. The

atmospheric temperature and the fullness of the cylinder are thegoverning factors. If

the atmospheric temperature is high, the cylinder may be allowed toattainequilibrium by itself; In cold climates it is necessary to heatthe filled cylinders slightly, preferably by putting themin a warm room.

F. on account of the danger of explosion. The result of the heating isthat all of the liquid oxygen isvaporized and the gas p'res- In no caseshould the heating temperature be over 100 blending or mixing effectsare also a part of this invention.

I claim as my invention: 1. A method of filling a receiver with a 5 gaswhich includes the steps of: entraining 1n a stream of said gasparticles of this gas I in liquefied form; introducing the mixture intosaid receiver; and vaporizing the liquid in said receiver to raise thepressure in said receiver.

2. A method of filling a receiver with oxygen which includes thestepsof: introducing into said receiver a mixture of liquid and gaseousoxygen; and heating said receiver to vaporize the liquid oxygendelivered thereto in said mixture.

In testimony whereof, I have hereunto set my hand at Denver, Colorado,this 5 day of July, 1928. CHESTER MOTT.

